[
https://issues.apache.org/jira/browse/HBASE-2022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12784547#action_12784547
]
stack commented on HBASE-2022:
------------------------------
Patch seems fine.
Reading the forums note you post, the reporter says that once it returns null
once, it does so ever after. I wonder if that will happen here? Perhaps log
it if we get a null out the linkedlist? Do it here and in HRS.Worker.run since
its not supposed to happen.
Could it be a synchronization issue? I haven't looked? Maybe the linked list
needs synchronizing? All access to the list?
> NPE in housekeeping kills RS
> ----------------------------
>
> Key: HBASE-2022
> URL: https://issues.apache.org/jira/browse/HBASE-2022
> Project: Hadoop HBase
> Issue Type: Bug
> Affects Versions: 0.20.2
> Reporter: Jean-Daniel Cryans
> Assignee: Jean-Daniel Cryans
> Priority: Critical
> Fix For: 0.20.3, 0.21.0
>
> Attachments: HBASE-2022.patch
>
>
> Saw this on Zhenyu's 0.20.1 cluster (which for some weird reason seems to
> have many issues):
> {code}
> 2009-11-30 16:44:48,170 FATAL
> org.apache.hadoop.hbase.regionserver.HRegionServer: Unhandled exception.
> Aborting...
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.housekeeping(HRegionServer.java:1280)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:590)
> at java.lang.Thread.run(Thread.java:619)
> {code}
> This reminds me of HBASE-1386 and in fact this could be the same issue (but I
> can't confirm). Searching on the web gives me some hits and this is
> particularly interesting http://forums.sun.com/thread.jspa?threadID=5379669
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
